The judge investigating the July 24 Santiago de Compostela train accident has summoned staff from Adif, the Spanish state-owned firm that manages Spain's railway infrastructure, give evidence on security measures at the track where the crash occurred.

The company is keen to stress that it is normal to be called to give evidence – in Spanish “imputar” – in such a case and underlines that it has not been charged with any offence, reports La Gaceta. Spanish legal procedures mean the firm may be charged after it has made its statement to the judge.

The judge’s inquiry states that the deaths are “obviously connected” to the train’s excessive speed, but is also focusing on whether security was sufficient at the trackside.